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Re: smtp 587 always fails to send email


From: You Wu
Subject: Re: smtp 587 always fails to send email
Date: Thu, 24 Nov 2016 13:19:24 +0800
User-agent: Emacs/Gnus

asjo@koldfront.dk (Adam Sjøgren) writes:

> You writes:
>
>> Concerning security level, which one is better? 587 on `starttls'
>> or 465 on `ssl'?
>
> Both are fine, if your client stops if STARTTLS doesn't work/isn't
> available.
I saw `gnutls-cli --insecure...' when connecting to emails
servers occasionally. I don't know whether it's related to the
`starttl' setting.

Seems this occured much back in Emacs 24. I am now on Emacs 25.
> (Otherwise if an interceptor could remove the STARTTLS support
> announcement from the server, and if the client continues in
> non-encrypted mode, then it would be bad. smtpmail does the right thing,
> though:
>
>   "starttls to insist on STARTTLS"
>    - 
> https://www.gnu.org/software/emacs/manual/html_node/smtpmail/Encryption.html
> )
>
>
>   Best regards,
>
>     Adam

-- 
Hello, world



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